Port Diagram
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Device Overview
General Description
Available in either a connectorized or miniature surface mount package (0.240 inch x 0.150 inch), the DPX-3 is a low cost, high performance diplexer. The unique design offers high pass/low pass signal routing/multiplexing with excellent isolation. Passband insertion loss is less than 1.2 dB with rejection typically exceeding 25 dB. Besides being ideal for transmitter/receiver applications, the DPX-3 can also be used as an excellent non-reflective low pass (or high pass) filter for systems requiring broadband 50Ω impedance match (such as mixers).
Features
- Low Insertion Loss
- Superior Repeatability
- Low Profile Miniaturized, Reflow Solderable Package Option
- User defined cross over frequencies available
Applications
- Reflectionless Filter Applications
- RF Transceivers
Functional Block Diagram
DPXN-3
Diplexer
Table Of Contents
Revision History
| Revision Code | Revision Date | Comment |
|---|---|---|
| - | 2012-11-29 | Datasheet Initial Release |
DPXN-3
Diplexer
Port Configuration and Functions
Port Functions
| Port | Function | Connector Type | Description | DC Equivalent Circuit |
|---|---|---|---|---|
| GND | Ground | - | DPXN package ground path is provided through the metal housing and outer coax conductor. |  |
| Port 1 | RF High Band | - | Port 1 is DC open to Port 2 and Port 3. |  |
| Port 2 | Common/Input | - | Port 2 is DC open to Port 1 and short to Port 3. |  |
| Port 3 | RF Low Band | - | Port 3 is DC open to Port 1 and short to Port 2. | |
DPXN-3
Diplexer
Specifications
Package Information
| Parameter | Details | Rating |
|---|---|---|
| Dimensions | - | 11.94 x 11.94 mm |
DPXN-3
Diplexer
Electrical Specifications
Specifications guaranteed from -55 to +100°C, measured in a 50Ω system.
| Parameter | Test Conditions | Minimum Frequency (GHz) | Maximum Frequency (GHz) | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|---|
| 1 dBc High Passband 1 | Temp = 25°C | 2.81 | - | - | - | - | GHz |
| 3 dBc High Passband 2 | Temp = 25°C | 2.61 | - | - | - | - | GHz |
| 30 dBc High Pass Rejection Point 3 | Temp = 25°C | 1.21 | - | - | - | - | GHz |
| High Passband Return Loss 4 | Temp = 25°C | - | - | - | 5 | - | dB |
| High Pass Isolation 5 | Temp = 25°C | - | - | - | 4 | - | dB |
| High Pass Group Delay 6 | Temp = 25°C | - | - | - | 398 | - | ps |
| 1 dBc Low Passband 7 | Temp = 25°C | - | 4.09 | - | - | - | GHz |
| 3 dBc Low Passband 8 | Temp = 25°C | - | 3.77 | - | - | - | GHz |
| 30 dBc Low Pass Rejection Point 9 | Temp = 25°C | - | 3.77 | - | - | - | GHz |
| Low Passband Return Loss 10 | Temp = 25°C | - | - | - | 14 | - | dB |
| Low Pass Isolation 11 | Temp = 25°C | - | - | - | 7 | - | dB |
| Low Pass Group Delay 12 | Temp = 25°C | - | - | - | 222 | - | ps |
| Crossover Frequency 13 | Temp = 25°C | - | - | - | 2.45 | - | GHz |
| Common Port Return Loss 14 | Temp = 25°C | - | - | - | 3 | - | dB |
| Impedance 15 | Temp = 25°C | - | - | - | 50 | - | Ω |
| 1 dBc High Passband | - | - | - | 4.2 | - | 8 | GHz |
| 1 dBc Low Passband | - | - | - | 0 | - | 2.3 | GHz |
| 30 dBc Low Pass Rejection Point | <1.5 GHz | - | 1.5 | 25 | 30 | - | dB |
| 30 dBc Low Pass Rejection Point | <2.3 GHz | - | 2.3 | - | 15 | - | dB |
| Common Port Return Loss | <2.3 GHz | - | 2.3 | - | 15 | - | dB |
| Common Port Return Loss | 4.2-8 GHz | 4.2 | 8 | - | 15 | - | dB |
| Cross Over Frequency | 3.1 GHz | 3.1 | 3.1 | - | 5 | - | % |
| High Pass Filter, Pass Band Insertion Loss | 4.2-8 GHz | 4.2 | 8 | - | 0.7 | 1.4 | dB |
| High Pass Filter, Pass Band Return Loss | 4.2-8 GHz | 4.2 | 8 | - | 15 | - | dB |
| Isolation | <2.2 GHz | - | 2.2 | 14 | 25 | - | dB |
| Isolation | 4.4-8 GHz | 4.4 | 8 | 14 | 25 | - | dB |
| Low Pass Filter, Pass Band Insertion Loss | DC-2.3 GHz | 0 | 2.3 | - | 0.7 | 1.4 | dB |
| Low Pass Filter, Pass Band Return Loss | <2.3 GHz | - | 2.3 | - | 15 | - | dB |
| Low Pass Filter, Stop Band Rejection | 4.2-4.8 GHz | 4.2 | 4.8 | - | 15 | - | dB |
| Low Pass Filter, Stop Band Rejection | 4.8-8 GHz | 4.8 | 8 | 15 | 20 | - | dB |
| RF Power | - | - | - | - | - | 1 | W |
| Parameter | Test Conditions | Minimum Frequency (GHz) | Maximum Frequency (GHz) | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|---|
| 1 dBc High Passband 1 | Temp = 25°C | 2.81 | - | - | - | - | GHz |
| 3 dBc High Passband 2 | Temp = 25°C | 2.61 | - | - | - | - | GHz |
| 30 dBc High Pass Rejection Point 3 | Temp = 25°C | 1.21 | - | - | - | - | GHz |
| High Passband Return Loss 4 | Temp = 25°C | - | - | - | 5 | - | dB |
| High Pass Isolation 5 | Temp = 25°C | - | - | - | 4 | - | dB |
| High Pass Group Delay 6 | Temp = 25°C | - | - | - | 398 | - | ps |
| 1 dBc Low Passband 7 | Temp = 25°C | - | 4.09 | - | - | - | GHz |
| 3 dBc Low Passband 8 | Temp = 25°C | - | 3.77 | - | - | - | GHz |
| 30 dBc Low Pass Rejection Point 9 | Temp = 25°C | - | 3.77 | - | - | - | GHz |
| Low Passband Return Loss 10 | Temp = 25°C | - | - | - | 14 | - | dB |
| Low Pass Isolation 11 | Temp = 25°C | - | - | - | 7 | - | dB |
| Low Pass Group Delay 12 | Temp = 25°C | - | - | - | 222 | - | ps |
| Crossover Frequency 13 | Temp = 25°C | - | - | - | 2.45 | - | GHz |
| Common Port Return Loss 14 | Temp = 25°C | - | - | - | 3 | - | dB |
| Impedance 15 | Temp = 25°C | - | - | - | 50 | - | Ω |
| 1 dBc High Passband | - | - | - | 4.2 | - | 8 | GHz |
| 1 dBc Low Passband | - | - | - | 0 | - | 2.3 | GHz |
| 30 dBc Low Pass Rejection Point | <1.5 GHz | - | 1.5 | 25 | 30 | - | dB |
| 30 dBc Low Pass Rejection Point | <2.3 GHz | - | 2.3 | - | 15 | - | dB |
| Common Port Return Loss | <2.3 GHz | - | 2.3 | - | 15 | - | dB |
| Common Port Return Loss | 4.2-8 GHz | 4.2 | 8 | - | 15 | - | dB |
| Cross Over Frequency | 3.1 GHz | 3.1 | 3.1 | - | 5 | - | % |
| High Pass Filter, Pass Band Insertion Loss | 4.2-8 GHz | 4.2 | 8 | - | 0.7 | 1.4 | dB |
| High Pass Filter, Pass Band Return Loss | 4.2-8 GHz | 4.2 | 8 | - | 15 | - | dB |
| Isolation | <2.2 GHz | - | 2.2 | 14 | 25 | - | dB |
DPXN-3
Diplexer
| Parameter | Test Conditions | Minimum Frequency (GHz) | Maximum Frequency (GHz) | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|---|
| Isolation | 4.4-8 GHz | 4.4 | 8 | 14 | 25 | - | dB |
| Low Pass Filter, Pass Band Insertion Loss | DC-2.3 GHz | 0 | 2.3 | - | 0.7 | 1.4 | dB |
| Low Pass Filter, Pass Band Return Loss | <2.3 GHz | - | 2.3 | - | 15 | - | dB |
| Low Pass Filter, Stop Band Rejection | 4.2-4.8 GHz | 4.2 | 4.8 | - | 15 | - | dB |
| Low Pass Filter, Stop Band Rejection | 4.8-8 GHz | 4.8 | 8 | 15 | 20 | - | dB |
| RF Power | - | - | - | - | - | 1 | W |
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DPXN-3
Diplexer
Typical Performance Plots
DPXN-3
Diplexer
